The LogIT Explorer has three built-in sensors which remain "active" unless blocked off using these blanking plugs.

The blanking plugs are not essential to the Explorer’s usability - just that if the teacher prefers to exclude data from 1 or 2 of the built-in sensors, these blanking plugs prevent the sensors from performing their designated functions.

It is recommended that when working with younger children 8 - 11, these blanking plugs are used. This helps focus young children on one specific data-logging function at a time.

When children are more familiar with the nature of data logging they can be encouraged to track different features simultaneously (temperature and light, for example) to see if (and where) there are relationships between two or more physical phenomena. EG: as the sensor gets closer to a light bulb, it registers a higher light intensity AND a higher temperature.